mechanics

How-To: Rotary Bench Cams

How-To: Rotary Bench Cams

Clever, simple idea for a workholder that grabs automatically when you push a board into it, and releases automatically when you pull it out. From medicinal chemist and woodworker Brian Grella. From where I sit, it looks like you might only need to make one of these rotating cams, and the other side of the clamp could be a fixed, flat fence.

Beautifully Overengineered Toy Car

Beautifully Overengineered Toy Car

From Dutch designer Wouter Scheublin, who made a big splash in 2010 with his Walking Table. This pull-back-to-wind Toy Car, machined in stainless steel and bronze, with matching walnut box, was produced in a limited edition of twenty, and is still available in laser-sintered nylon, though it isn’t cheap. [Thanks, Billy Baque!] More:Seriously Overengineered MousetrapVery, […]

Balloon Gripper with Positive Pressure Mode Can “Shoot” as Well as Grab

Balloon Gripper with Positive Pressure Mode Can “Shoot” as Well as Grab

Last March, roboticist Eric Brown and co-workers at the University of Chicago made headlines with their new, unconventional robot gripper design: a balloon filled with coffee grounds or other grainy material and fitted with a vacuum line. At atmospheric pressure, the balloon is squishy and can be “mushed” around an object—even traditionally hard-to-grip stuff like […]